The Weishi EBH340 heavy-duty cantilever roadheader, as Weishi Heavy Industry's flagship horizontal axis hard rock tunneling equipment, is specifically designed for tackling challenging conditions in deep wells with large cross-sections and high-density, ultra-hard rock tunnels. It directly addresses industry pain points such as high wear and tear on cutting tools, severe machine vibration, and poor tunnel formation. The machine features a 140-ton heavy-duty frame paired with a powerful 540kW power system and a patented horizontal axis cutting head, capable of conquering hard rock strata with compressive strength ≤130MPa, achieving a maximum cutting area of ​​45㎡, truly realizing one-time formation of large-section tunnels. It is the ultimate solution for tunneling large-section tunnels in ultra-hard rock.

The Weishi EBZ230A heavy-duty cantilever roadheader is a high-performance, cost-effective machine suitable for medium-hard rock roadways up to 85MPa. It is specifically optimized for addressing on-site challenges in small and medium-sized mine roadways, hard rock cutterheads in development roadways, cantilever leakage, poor roadway slope, and easy blockage by gangue. With its robust 80-ton self-weight, it meets the rigidity standards of the 260-type roadheaders on the market, setting a high-performance benchmark for medium-sized hard rock roadway excavation. The machine features a 362kW dual-motor drive system, including a 230kW cutting motor, enabling efficient operation in full-rock and semi-coal-rock roadways with compressive strength ≤85MPa. It has a maximum cutting area of ​​28.8㎡, perfectly meeting the cross-sectional requirements of mainstream mines.

The Weishi EBZ230S heavy-duty cantilever roadheader is specifically designed for small-section, high-hardness rock formations in coal mines. Despite its compact 75-ton body, it delivers uncompromised core performance, making it a professional solution for tunneling in narrow, hard rock tunnels. With a powerful 362kW engine, it can efficiently tackle hard rock with compressive strength ≤85MPa, achieving a maximum cutting area of ​​21.6㎡, demonstrating exceptional performance in confined spaces.

The Weishi EBZ260H is a 260kW hard rock roadheader designed for large-section coal mine roadways and demanding underground conditions. It combines a 90 t machine body with 420 kW of total installed power, including a 260 kW cutting motor and a 160 kW hydraulic pump motor.

Designed for rock compressive strength up to 90 MPa, the EBZ260H provides a maximum positioning cutting area of 30 m². Its reinforced structure and wear-resistant components support hard rock excavation, while equipment monitoring and intelligent upgrade options can be configured according to project requirements.

Within the Weishi Road Header Machine range, the EBZ260H offers a configuration for projects requiring large-section cutting coverage and a heavy-duty chassis. Loading, conveying and other configuration options can be reviewed against the roadway layout and operating conditions.

The Weishi EBZ260L is a 260kW low profile roadheader designed for hard rock and mixed coal-rock roadways where overhead clearance limits equipment selection. Its low-position cutting assembly addresses the space requirements of low-height roadway excavation.

The machine combines an 83 t body with 420 kW of total installed power, comprising a 260 kW cutting motor and a 160 kW hydraulic pump motor. It has a specified rock compressive strength limit of ≤90 MPa and a maximum positioning cutting area of 26.4 m².

Within the Weishi Road Header Machine range, the EBZ260L focuses on low-height working conditions. Loading apron, conveyor and canopy configurations can be reviewed against the roadway profile and available operating space.

The Weishi EBZ260S is a 260kW compact roadheader designed for small-section hard rock and mixed coal-rock roadways. It addresses restricted operating space, hard rock cutting loads and demanding floor conditions by combining a compact layout with a heavy-duty cutting assembly and crawler chassis.

This compact hard rock roadheader combines an 85 t machine weight with 392 kW of total installed power, including a 260 kW cutting motor and a 132 kW hydraulic pump motor. It offers a maximum positioning cutting area of 28.8 m² and a specified rock compressive strength limit of ≤90 MPa. Within the Weishi Road Header Machine range, the EBZ260S provides an option for projects where cutting capability and underground clearance must be assessed together.

The King of Hard Rock (100 MPa), the Mainstay of Medium and Large Mines

The Weishi EBZ280A heavy-duty cantilever roadheader, a flagship model for hard rock mining launched in 2022, is designed to meet the four core needs of domestic small and medium-sized coal mines: mining conditions of medium-hard rock up to 100 MPa, mine budget control, multi-face rotation construction, and high wear and tear on vulnerable parts. We have created the EBZ280A, an economical and standardized roadheader, filling the market gap where smaller models have weak rock-breaking capabilities and larger models have excessively high procurement costs. The machine adopts a 440kW balanced power solution, a lightweight 98-ton body, and 0.155MPa ultra-low pressure tracks, balancing convenient underground transport and the ability to traverse muddy floors. It covers multiple cutting heights from 3.2 to 5.2 meters and can be adapted to various working faces, including roadways and development roadways, reducing the cost of idle equipment in mines. It is a high-performance, cost-effective main roadheader solution for medium-hardness rock formations.

The VIS EBZ280D heavy-duty cantilever roadheader is specifically designed for hard rock construction in steep underground coal mine tunnels, boasting an industry-leading climbing ability of -25° to +23°. Its 110-ton heavy-duty chassis is equipped with a powerful 480kW motor, and a 280kW cutting motor capable of handling hard rock pressure ≤100MPa. A full set of specialized reinforcements for steep slopes enables efficient and routine tunneling in previously difficult steep hard rock tunnels, making steep-angle development roadway construction in mines no longer a challenge.

Cutting power: 230 kW

Number of bolting rigs: 4

Maximum cutting area: 26.4 m²

Specified rock strength: ≤85 MPa

Machine weight: 95 t

Maximum drilling depth: 18 m

Cutting motor power: 280 kW

Number of bolting rigs: 2

Maximum cutting area: 33.8 m²

Specified rock strength: Up to 100 MPa

Machine weight: 115 t

Maximum drilling depth: 15 m

The roadheader cutting arm is a core actuating component of the cantilever roadheader. It is primarily responsible for the three key tasks of coal cutting, rock breaking, and coal loading, directly determining the machine's overall cutting efficiency, operational stability, and maintenance frequency. Operating under harsh conditions characterized by heavy-load impacts, abrasive coal dust, water seepage, and oil contamination, the cutting arm’s internal gear transmission system and floating seal structure demand extremely high manufacturing precision and assembly standards.

The 280 cutting gearbox is a high-power, heavy-duty mining gearbox designed for cutting motors with power ratings up to 280 kW. It is specifically engineered for the cutting units of boom-type roadheaders, shearers, and continuous miners. Utilizing a parallel-shaft/planetary gear transmission configuration, this model features a high gear ratio, high output torque, robust overload capacity, and high reliability. It ensures stable operation of the cutting drum for coal and rock breaking under complex working conditions, including hard rock, mixed coal-rock, and pure coal seams.

Roadheader picks—commonly referred to as the "teeth" of the machine—are installed in the bit holders of the cutting head. They are the core consumable components responsible for directly breaking down coal and rock in EBZ-series boom-type roadheaders. Mainstream models include S135 (U135) and S47 (U47).